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If you have not already done so, install the
Power Switch in the hole you drilled in Step 7.
n
After completing Step 10, skip to Step 12.
CAUTION:
It is very easy to get the terminals A,
B, and C of the charging jack confused. Refer to
the drawings and make sure they are right.
11.
Installing Only the Power Switch
Half of the power switch is used to disable the
battery power and the other half disconnects
one of the track pick ups. Since you are not
installing the Battery Charging Jack, wire the
power switch as in Figure 8. Insulate the
soldered connections with shrink tubing or
electrical tape to prevent accidental shorts.
n
Cut the positive (+) red battery wire in half and
strip the insulation from the ends of each wire.
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Connect one of these wires to terminal #4 of
the power switch.
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Connect the remaining wire to terminal #5.
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If you have not already done so, install the
Power Switch in the hole you drilled in Step 7.
12. If you have purchased a Remote Volume
Control Switch (P.N. 810073), install this switch
in the hole you drilled in Step 9.
13. If you plan to install an optional Coupler Clank
Sensor Switch (P.N. 810072) install it now using
the directions that come with the Coupler
Sensor Switch.
14. Trigger switches can be used to activate some
of Sierra’s sound effects by way of magnets
embedded in the roadbed. If you wish to use
this method of activating your sound effects
you will need to purchase P.N. 810074. Included
is one trigger switch and one magnet. One
trigger switch is required per effect and one
magnet per location. If you plan to use trigger
reed switches, install them according to the
instructions that came with them.
15. If you have not already done so, install and
tighten all switches. Now place the speaker in
the fuel tank location. Use the screws provided
to secure the speaker with each of the three
mounting holes to the tank interior (Figure 9).
Feed all loose wires through the large hole in
the floor of the locomotive above the fuel tank.
16.
Make connections to the Sierra circuit board.
Use Figure 10 to guide you in making your
connections.
n
Connect the red wire from the USA Trains
circuit board ‘SPEAK1’ right terminal to the
Power Switch terminal #1.
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Connect the speaker leads to terminals 9 and
10 on the Sierra circuit board.
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To wire the Remote Volume Control Switch,
connect the yellow wire to terminal 1, the black
wire to terminal 2 and the green wire to
terminal 3.
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Connect any other accessories you’ve installed.
17. Connect the red power lead from the #2 lug of
the power switch (Figure 8) to terminal 7 on the
Sierra board. Connect the green wire you
connected to the USA circuit board SPEAK1
plug in Step 6 to terminal 8 of the Sierra board.
18. Plug the battery harness plug into the socket at
the middle of the Sierra circuit board.
Caution:
Use your finger to hold the socket
firmly against the circuit board when plugging
in the connector to prevent the socket from
ripping off the circuit board. The connector only
goes in one way. It is a snug fit and once
plugged in, it is difficult to remove. If you need
to unplug the battery later, use your thumb and
forefinger to hold the socket firmly against the
circuit board, while using your other hand to
grasp the connector (NOT THE WIRES) and
gently wiggle it from side to side as you pull the
6V Battery
- +
BLACK
RED
Sierra Battery
Connector Plug
Not used
Power Switch
To Terminal 7 on
Sierra board
To Right
Track Pickup
To red wire of
Battery (+)
To Right
Track Pickup
To red wire
of Sierra's green
battery plug
To Sierra
Terminal 7
Not Used
Not Used
1
2
3
4
5
6
Figure 8
Figure 9
